Learning Forum

[Luca Dannemann]

Hello everyone, 
does anyone have experience with simulating in a loop? I am running many (>1000) simple simulations within an optimization algorithm. I use PyMapdl for this. With each simulation the required RAM in Python increases. If I do not run the simulations, the problem does not occur. Enclosed is a highly simplified Psyeudocode where the problem also occurs. Even starting and closing Ansys in each run does not solve the problem (apart from a considerable increase in runtime).

import os

from ansys.mapdl.core import launch_mapdl

path = os.path.abspath(__file__)

directory = os.path.dirname(path)

temp_dir = os.path.join(directory, 'temp_ansys')

if not os.path.exists(temp_dir):

    os.makedirs(temp_dir)

mapdl = launch_mapdl(nproc=4,run_location=temp_dir, override=True)

def calculate_energy():

    mapdl.clear()

    mapdl.prep7()

    mapdl.blc4(0, 0, 1000, 1000)

    mapdl.blc4(1000, 0, 1000, 1000)

    mapdl.aglue('ALL')

    # BC

    mapdl.ksel("S", "LOC", "X", 0)

    mapdl.ksel("A", "LOC", "X", 1000)

    mapdl.ksel("R", "LOC", "Y", 0)

    mapdl.dk("ALL", 'UX', 0)

    mapdl.dk("ALL", "UY", 0)  

    mapdl.allsel()

    mapdl.clear()

    return 1

for i in range(0,1000):

    a = calculate_energy()

 

[mjmiddle]

Try posting over:

https://discuss.ansys.com

[Erik Kostson]

Our colleagues are helping :

https://github.com/ansys/pymapdl/discussions/3041

 

Closing here

Erik